GPU Video Heatsink 730-0630-A with Sensor Original iMac 27 inch A1312 2011 for Radeon 6770 6670 6750 - used original spareparts for Macs
Upgrading the graphics in our 2011 iMac (first attempt) - YouTube
Apple iMac 2011 A1312 AMD HD 6970M - Grafikkarte mit NEU 6970M GPU & 1GB RAM | eBay
iMac 2009 / 2010 / 2011 GPU upgrade — Fixing LED/LCD PWM brightness with an ESP32 | by Fixing Things | Medium
iMac 2011 GPU upgrade to NVIDIA 770M with new VBIOS - YouTube
Amazon.com: Sunvalley 2GB Graphics Video Card Replacement for Apple iMac Mid-2011 27 Inch A1312 Core i7 3.4 MD063LL/A MD063 Desktop PC Computer, ATI Radeon HD 6970 GDDR5 2 GB, New GPU Upgrade
Sunvalley 2 GB Grafikkarte GPU Upgrade Ersatz, für for Apple iMac Mitte 2011 A1312 27 Zoll
Für IMAC 27 ”A1311 A1312 NVIDIA GeForce GTX 765M 770M 780M 860M 880M 2GB 3GB 4GB 8GB Video Karte Ersetzen AMD ATI mit kühlkörper - AliExpress
Amazon.com: Sunvalley 2GB Graphics Video Card Replacement for Apple iMac Mid-2011 27 Inch A1312 Core i7 3.4 MD063LL/A MD063 Desktop PC Computer, ATI Radeon HD 6970 GDDR5 2 GB, New GPU Upgrade